Authors:

Matthew Ray
Chad Sosolik
(Clemson University)

We are investigating the interactions of hyperthermal energy ions
with
ultrathin film Schottky diode devices, probing the role of
ion-surface
impact events and charge transfer on chemicurrent production.
Chemicurrents
are a fundamental ``chemical current'' that arises from
electron-hole pair
production at a diode surface. To date, these currents have been
explored
only for thermal energy gas-surface impacts. Using a UHV beamline
to produce
well-collimated monoenergetic noble gas and alkali-metal beams
from 10 eV to
10 keV, we have the unique flexibility to probe our in-house
designed diode
devices with a wide range of incident species, energies, and
charge states.
Preliminary results are presented and discussed in the context of
basic
gas-surface energy transfer processes.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2006.SES.HC.1